what is causing the air quality alert

The air quality alert is caused primarily by elevated levels of particulate matter (PM2.5) and ground-level ozone. Factors contributing to poor air quality include emissions from vehicles, industrial activities, power plants, and natural sources like dust. Weather conditions such as heat, sunshine, and limited wind can worsen pollution by slowing the dispersal of pollutants, leading to higher concentrations in the air. Specifically, for August 2025, air quality in some regions shows moderate particulate matter levels that can aggravate heart and lung conditions, especially for sensitive groups. Additionally, ground-level ozone forms when nitrogen oxides from fossil fuel combustion react with organic compounds in sunlight and heat, causing respiratory issues and triggering asthma attacks. In certain areas like Jerusalem, poor air quality is exacerbated by desert dust, vehicular emissions, industrial sources, and dry, hot weather conditions that prevent pollutant dispersal. Such conditions cause immediate health risks, especially to vulnerable populations. Overall, the air quality alert is caused by a combination of particulate pollution and ozone levels elevated by human activities and adverse weather patterns, making it necessary for sensitive individuals to limit outdoor exertion and take protective measures.